Maclellan Gymnasium is home to the 24-time Southern Conference champion Mocs wrestling team and five-time SoCon tournament champion Lady Mocs volleyball team. The 4,177-seat gym is the former home of the men's and women's basketball teams before they moved across the street to McKenzie Arena in 1982.

Maclellan Gym was built on campus in 1961 and was named after Mr. and Mrs. Robert Jardin Maclellan. Mr. Maclellan was a member of the Chattanooga Board of Trustees from 1935 until his death in 1956.

The gym houses offices and classrooms for the Health and Human Performance department. It features a main court, auxiliary court, weight room, aerobic equipment area and swimming and diving pool. Locker rooms for the Lady Mocs volleyball team and a team meeting room that includes furniture and a television is also housed inside "Big Mac."

Prior to the 2009 season, the main floor was updated with its primary use for volleyball. With the Power-"C" logo in center, Chattanooga spelled out across the baselines and volleyballs on the corners, the Lady Mocs now have a true home-court advantage.

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